The UAE has among the world’s highest immunization rates DUBAI: Dubai, the second-largest member of the United Arab Emirates federation, has started offering the Pfizer-BioNTech COVID-19 vaccine to 12-15 year olds, the government media office said on Twitter on Tuesday. The Reuters COVID-19 tracker shows that the UAE has among the world’s highest immunization rates, with about two thirds of its population having taken two doses of the Pfizer-BionTech, Sinopharm, AstraZeneca or Sputnik V vaccines.